
/*
 * Copyright (C) Igor Sysoev
 */


#ifndef _NGX_CHANNEL_H_INCLUDED_
#define _NGX_CHANNEL_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_process.h>
#include <ngx_files.h>

struct ngx_cycle_s;
struct ngx_event_s;
struct ngx_log_s;


typedef struct {
     ngx_uint_t  command;
     ngx_pid_t   pid;
     ngx_int_t   slot;
     ngx_fd_t    fd;
} ngx_channel_t;


ngx_int_t ngx_write_channel(ngx_socket_t s, ngx_channel_t *ch, size_t size,
    struct ngx_log_s *log);
ngx_int_t ngx_read_channel(ngx_socket_t s, ngx_channel_t *ch, size_t size,
    struct ngx_log_s *log);
ngx_int_t ngx_add_channel_event(struct ngx_cycle_s *cycle, ngx_fd_t fd,
    ngx_int_t event, void (*handler)(struct ngx_event_s *));
void ngx_close_channel(ngx_fd_t *fd, struct ngx_log_s *log);


#endif /* _NGX_CHANNEL_H_INCLUDED_ */
